如何修复 Chromebook 中的 DHCP 查找失败错误

Do you get the DHCP lookup failed error in Chromebook when you are attempting to connect to a network? No need to worry! Through this guide, you are going to learn how to fix DHCP Lookup Failed error in Chromebook.

什么是Chromebook？ What is DHCP Lookup Failed error in Chromebook?

Chromebook is a new generation of computers that are designed to execute tasks in a manner that is quicker and easier than the existing computers. They run on Chrome 运行系统 that includes the finest features of Google along with cloud storage, and enhanced data protection.

Dynamic Host Configuration Protocol, abbreviated as DHCP, is a mechanism for device configuration on the internet. It allocates IP addresses and allows default gateways to facilitate quick and smooth connections between various devices on the IP network. This error pops up while connecting to a network. It basically means that your device, in this case, Chromebook, is not able to retrieve any information related to IP addresses from the DHCP server.

如何修复 Chromebook 中的 DHCP 查找失败错误

What causes DHCP Lookup Failed 错误 in Chromebook?

There are not many known causes of this issue. However, some of them are:

• VPN – VPN masks your IP address and may cause this issue.
• Wi-Fi extenders – They generally don’t gel well with Chromebooks.
• Modem/Router Settings – This too, will cause connectivity problems and result in DHCP Lookup failed error.
• 过时的 Chrome 操作系统 – Using an outdated version of any operating system is bound to create problems on the associated device.

Let’s get to fixing this error with the easiest and quickest methods explained below.

Method 1: Update Chrome OS

Updating your Chromebook from time to time is a great way to fix any errors related to Chrome OS. This would keep the operating system in tune with the latest software and will also prevent glitches and crashes. You can rectify Chrome OS-related issues by upgrading the firmware as:

1.打开 通知 菜单，点击 时间 icon from the bottom-right corner.

2. 现在，单击 齿轮 访问图标 Chromebook设置.

3. From the left panel, select the option titled 关于Chrome操作系统.

4。 点击 检查更新 button, as highlighted.

5. 重新启动 the PC and see whether the DHCP lookup issue is resolved.

另请参阅： 如何从 Chromebook 中删除帐户

Method 2: Restart Chromebook and router

Restarting devices is an efficient way to fix minor errors, as it gives your device time to reset itself. Hence, in this method, we are going to restart both, router and Chromebook to possibly fix this issue. Just follow these simple steps:

1。 第一， 关 Chromebook。

2.关 the modem/router and 断开 它来自电源。

3. 稍等 a few seconds before you 重新连接 it to the power source.

4. 稍等 for the lights on the modem/router to stabilize.

5.现在， 打开 the Chromebook and 联接 it to the Wi-Fi network.

Verify if the error DHCP lookup failed in Chromebook is fixed. If not, try the next solution.

另请参阅： Fix DHCP is not enabled for WiFi in Windows 10

Method 3: Use Google Name Server or Automatic Name Server

The device will display the DHCP lookup error if it is unable to interact with the DHCP server or IP addresses on a DNS服务器. Therefore, you can use the Google Name server or Automatic Name Server to solve this problem. Let’s see how to do this:

Option 1: Using Google Name Server

1。 导航 Chrome Network settings 来自 通知菜单 如解释 方法1.

2。 下 网络设置，选择 Wi-Fi 选项。

3。 点击 右箭头 available next to the 网络 to which you are unable to connect.

4. Scroll down to locate and select the 名称伺服器 选项。

5。 点击 下拉 框并选择 Google Name Servers from the given menu, as shown.

Check whether the Samsung TV Wi-Fi connection issue has been rectified by reconnecting it to the Wi-Fi network.

Option 2: Using Automatic Name Server

1. If the DHCP lookup failed error persists even after utilizing Google Name Server, 重新开始 Chromebook。

2. 现在，继续 网络设置 page as you did earlier.

3。 向下滚动到 名称服务器 label. This time, choose Automatic Name Servers from the drop-down menu. Refer to pic given above for clarity.

4. 重新连接 to the Wi-Fi- network and verify if the DHCP problem has been resolved.

Option 3: Using Manual Configuration

1. If using either server didn’t solve this problem, go to the 网络设置 再次。

2. Here, toggle off the 配置IP地址 自动 选项，如图所示。

3. 现在，设置 Chromebook IP address manually.

4. 重新启动 the device and reconnect.

The DHCP lookup failed error in Chromebook error should be fixed by now.

Method 4: Reconnect to the Wi-fi network

Another easy method to fix DHCP lookup failed error in Chromebook is to disconnect it from your Wi-Fi network and reconnect it afterward.

Let’s see how you can do this:

1。 点击 Wi-Fi symbol in the lower right corner of the Chromebook screen.

2.选择您的 Wi-Fi network name. Click on 个人设置.

3. In the Network Settings window, Disconnect 网络。

4. 重新启动 您的 Chromebook。

5。 最后， 联接 it to the same network and continue using the device as usual.

Move to the next method if this does not fix the DHCP lookup failed error in Chromebook.

另请参阅： 修复 Windows 10 上的 WiFi 访问受限或无连接问题

Method 5: Change Frequency Band of the Wi-Fi network

It is possible that your computer doesn’t support the Wi-Fi frequency that your router offers. However, you can change frequency settings manually to meet the frequency standards of the network, if your service provider supports this change. Let’s see how to do this:

1。 发射 铬 然后导航到 router website. 成员登录 到您的帐户。

2。 导航到 无线设置 选项卡并选择 更改频段 选项。

3。 选择 5GHz， if the default setting was 2.4GHz， 或相反亦然。

4。 最后， 保存 all changes and exit. 

5. 重新启动 your Chromebook and connect to the network.

Check whether the DHCP issue is now rectified..

Method 6: Increase DHCP range of Network Address

We observed that removing certain devices from the wi-fi network or manually increasing the number of devices limit helped rectify this issue. Here’s how to do it:

1. In any 网页浏览器，导航到您的 router website 和 登录 凭借您的凭据。

2. 继续 DHCP 设置 标签。

3.展开 DHCP IP range.

For example, if the higher range is 192.168.1.250, expand it to 如图所示。

4. 保存 变化和 出口 网页。

If the error DHCP lookup failed still pops up, you could try any of the succeeding methods.

Method 7: Disable VPN to fix DHCP Lookup Failed error in Chromebook

If you use a proxy or a VPN to connect to the internet, it may cause conflict with the wireless network. Proxy and VPN have been known to cause DHCP lookup failed error in Chromebook on numerous occasions. You can turn it off temporarily to fix it.

1.右键单击 VPN client.

2. 切换 折扣 the VPN, as highlighted.

3。或者，您可以 卸载 it, if it is no longer needed.

另请参阅： 修复无法访问站点、找不到服务器IP的问题

Method 8: Connect without Wi-Fi Extender and/or Repeater

Wi-fi extenders or repeaters are great when it comes to extending the Wi-Fi connectivity range. However, these devices have also been known to cause certain errors like the DHCP lookup error. Therefore, make sure that you connect to Wi-Fi straight from the router.

Method 9: Use Chromebook Connectivity Diagnostics

If you can still connect to the DHCP server and are still getting the same error message, Chromebook comes with an in-built Connectivity Diagnostics tool that will assist you in diagnosing and resolving connectivity issues. Here’s how you can use it:

1. Search for diagnostics in the Start Menu.

2. Click on the Chromebook Connectivity Diagnostics from the search results.

3。 点击 Run Diagnostics link to start running the tests.

4. The app performs the following tests one by one:

• 强制门户
• DNS
• 防火墙
• 谷歌服务
• 本地网络

5. Allow the tool to diagnose the issue. The connection diagnostics tool will perform a variety of tests and rectify issues 如果有的话。

Method 10: Remove all Preferred Networks

Chromebook OS, like any other operating system, retains network credentials to allow you to connect to the same network without entering the password every time to do so. As we connect to more Wi-Fi networks, Chromebook keeps storing more & more passwords. It also creates a list of preferred networks depending on past connections and data usage. This causes network stuffing. Hence, it is advisable to remove these saved preferred networks and check if the issue persists. Follow the steps given below to do the same:

1。 去 状态区 on your screen and click the 商业网络 Icon then select 个人设置.

2. 内 互联网连接 option, you will find a Wi-Fi network. Click on it.

3. 然后，选择 首选网络. A complete list of all saved networks will be shown here.

4. When you hover over the names of the network, you will see an X mark. Click on it to 去掉 the preferred network. 

6. Repeat this process to 删除 each Preferred Network 个别地.

7. Once the list is cleared, connect to the desired Wi-Fi network by verifying the password.

This should solve the DHCP lookup failed issue. If it doesn’t, proceed to the next solution.

Method 11: Reset the Router to fix DHCP Lookup Failed error in Chromebook

The DHCP problem might be caused by corrupt firmware on your router/modem. In such cases, you can always reset the router by pressing the reset button of the router. This restores the router to default settings and might fix the DHCP lookup failed in Chromebook error. Let’s see how to do it:

1. 打开 your router/modem 

2.找到 RESEt button. It is a tiny button located on the backside or right-hand side of the router and looks like this:

3. 现在，按 重置 button with a paper pin/safety pin. 

4. Wait for the router to reset completely for approximately 30 seconds.

5。 最后， 打开 the router and reconnect Chromebook.

Now check if you’re able to fix DHCP lookup failed error in Chromebook. 

Method 12: Contact Chromebook Customer Support

If you have tried all of the methods listed above and are still unable to resolve the lookup problem, you should contact official customer support. You can also receive more information from the Chromebook Help center.

推荐：

我们希望您能够 fix the DHCP lookup failed error on Chromebook. Let us know which method worked for you the best. Have any queries/suggestions? Drop them in the comment section below.